Drilling machine



A ril 28, 1925. 1,535,257

w. 1'. SEARS DRILLING MACHINE Original Filed Sept. 9, 1921 Patented Apr. 28, 1925.

UNITED STA'llESy maze-r Parent oFricE.

WILLARD T. SEARS, 0F MONTCLAIR, NEW J'ETdiiaEY, ASSIG-NOR TU NILESBEME1\TT- POND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

DRILLING Application filed September 9, 1.921, Serial To all whom it may concern.-

Be it known that l, VVILLARn T. linens, a citizen of the United States, residing at Montclair, in the county out Essex and State of New Jersey, have invented certain new and useful Improvements in Drilling liiik chines, of which the following is a specification.

This invention relates to drilling machines and particularly to an improved mechanism for clamping a drill supporting column against rotation on its support. Heretotore, this clamping operation has been performed either by hand or by a separate power operating means for such purpose. It is the primary object of this .invention to provide means whereby this clamping operation may be readily and conveniently performed from the main power means of the machine.

More specifically, it is an object of the invention to provide a column clamping means and means adapted to be rotated in opposite directions from the main power means to operate the clamping means to clamp and unclamp the column respectively.

A further object or" the invention is to provide clamping means for the column of a radial drill, two elements rotated in opposite directions t'roni the main pow r means, and magnetic clutch means for engaging the clamping means with either of the said elements to clamp or unclamp the column respectively.

With these and other objects in view, my invention consists in the features of construction and operation set forth in the following specification and illustrated in the accompanying drawing. in such drawing annexed hereto and forming a part of this specification, I have shown my invention as embodied in one type of radial drilling machine but it will be understood that the invention can be otherwise embodied and that the drawing is not to be construed as deiin- .ing or limiting the scope ()1 the invention, the claims appended to this specification being relied upon for that purpose.

Referring to the figures of the drawing:

Figure 1 is a perspective view of a radial drilling machine embodying my invention.

Fig. 2 is a fragmentary detail view of the mechanism shown at the top of the drill column in Fig. 1.

Figs. 3 and l are fragmentary cross sec MACHINE.

No. 499,521. Renewed February 23, 1923.

tional views of the clamping mechanism taken on lines 3-3 and 4-4 respectively of Fig. 1, such views showing the mechanism in the column clamping position.

Figs. 5 and 6 are views similar to Figs. 3 and d but showing the clamping mechanism in an unclamped position.

Referring more specifically to the drawing by reference characters, 1 indicates the bed of a radial drilling machine on the base or which is mounted for rotary adjustment drill supporting column 3. An arm 4 is illustrated as mounted for vertical movement on the column and a drill sup porting element 5 is mounted for horizontal movement along the arm. A mainpowcr means,as a motor 6, is provided for operating the drilling mechanism, including the rotation of the drill spindle 7. The driving connection from the motor to the drill spindle comprises the usual driving ele ments, including the motor shaft 8, a verti "al shaft 9 within the column, and an arm shaft 10, the usual gearing being provided tor operatively connecting these several shafts and the drill spindle. The mechanism thus far described, within itself, comprises no part of the present invention and therefore will not be further described here in. he novel mechanism comprising the in vention will now be described in detail.

As heretofore stated, the drill column 3 is adapted to be adjustably rotated about its vertical axis to permit the swinging adjustment of the drill supporting arm l. The base 2 is slotted at 11 and 12 to provide a movable clamping portion 13 for gripping the column to secure the same against rotation while performing drilling operations. I have illustrated this clamping portion as provided with a clamping mechanism inchiding an eccentric 14- on a shaft rotatably mounted .in two hi 16 on the base. An element 17 engages the eccentric and connects the lugs' 16 to the clamping portion Check nuts 18 are provided on the element 17 for adjusting the same. Rotation of the eccentric is adapted to clamp and unclamp the column.

in the drawing, I have illustrated mechanism for rotating the eccentric in opposite directions from the main motor to effect the clamping and unclamping of the column. It should be understood, however, that this means, as shown in the drawin is merelv illustrative, any other mechanism for pern I H- 4 in this eepee-d ziatention iiicatione hiecl er.

vherehy the mechanism remains in its ed position vhen the clutch and t power reieeseel. To Lniehmip the eohnnin the opera or pushes the lnaiton y ,7 L \VlUJL'QUPUZ the other clutch is (5110"if40il and engaged with its gear i to rotate the sliett 15 in the opposiae direction (indicated by the arrow in Fig. 6) to unclanip the eoln n. The shaft and ecentric are stopped in the nnelaiinning position by the engagement of 7' the co 3-1 with the stop 3%. it should he innlersteocl that either clutch is siip when the shaft 15 is prevented rotation by the stops 253 and 34-.

lVhat it cl. ie:

"mehine, the (Ulili nn SUPPUE'tQIl on i I tli colnnin znnl moraine r tire to the base, 2: )eut the cohnnn zirie wehenisn'i carriui h neehzinieni, chempin mez: i

arm mist the sani movement and mezms adapted lo he op vi a Jae-e, a. coin enpport on the base, drilling: mechani; carried h the eohnnn. power means tor operzitnng the drilling mechanism, clinnpine nieznna tor en zieing the eohnnn :1 ,jgzicent the r l n adapted to he operated hv i'er effecting the c column through the elm iping; -10

In a (lill lnfj n'mz-hinc the co n nnn oi a base, a minn rotritahly supper ,1

the base, ('iiilli. {1' incrl uni, carried in? the column, power means tor 01x 1 di'i mechanism, i-iznnping th FOIL-Iii the cl a i i 1 ping 4-. In a drilling machine. the ennw of 1/ lJflSC, eohnnn rotntnhl suppm i the liaise drilling mechanism carried h cohnnn, power means ior operating the (hillinechzinisnn clamgine' niezinn surroundthe column acliecene the liaise. :1 shaft P ti: connected with the ehimpin for operating the 8211110 and men 1 the control oi the operator for onerelv connecting the power means with the for effecting the chnnping oi? the DECS,

she'lii n a drilling machine. the comhination 01' :1 hase, a column rotatahly siiipported on the hasc, drilling mechanism C211l'l0l hy the column power means for operating; the A '1]- ing inezizi'mnism, clamping means surrounding ie column adjacent the huge, a shaft provided with an eccentric thereon operatively connected with the clamping means for drawing the same into tight engagement with the column, means under the control of the operator for operatively connecting the power means with the said shaft for efitecting the clamping of the column, and means for stopping the rotation of the shaft and eccentric in the column clamping position.

6. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means sur rounding the column adjacent the base, a vertical shaft extending along the column and provided with an eccentric thereon operatively connected with the clamping means for drawing the same into tight engagement with the column, means under the control or the operator for operatively connecting the power means with the said shaft for effecting the clamping of the column, and means for alternately stopping the rotation of the shaft and eccentric in the column clamping and unclamping positions respectively.

7. In a drilling machine, the combination of a base, a column rotatably supported on the base, an arm carried by the column, a drill supporting element on the arm, power means for operating the drill, clamping means for engaging the column adjacent the base, means adapted to be operated by the power means for effecting the clamping of the column through the clamping means, and means on the drill supporting element for controlling the clamping operation.

8. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means for engaging the column adjacent the base, means adapted to be operated by the power means for effecting the clamping of the column through the clamping means, and electromagneticmeans for controlling the clamping operation.

9. In a drilling machine, the combination of a base, a column rotatably supported on the base, an arm carried by the column, a drill supporting element on the arm, power means for operating the drill, clamping means for engaging the column adjacent the base, means adapted to be operated by the power means for effecting the clamping of the column through the clamping means, electro-magnetic means for controlling the clamping operation, and a switch on the drill. supporting element for controlling the electro-magnetic means.

10. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means for engaging the column adjacent the base, a pair of elements rotatable in oppositedirections by the power means, and means for operatively connecting the clamping means with either or such elements for ell'ecting the clamping and unclamping respectively of the column through the clamping means.

11. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling machanism, clamping means surrounding the column adjacent the base, a shaft operatively connected with the clamping means for operating the same, rotation of the shaft in one direction being adapted to'clamp the column and rotation thereof in the opposite direction being adapted to unclamp the column, and means under the control of the operator for operatively connecting the power means with the said shaft for rotating the latter in either direction for clamping or unclamping the column.

12. In a drilling machine, the combination or a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means for engaging the column adjacent the base, and means comprising an electro-magnetic clutch for operatively connecting the clamping means with the power means for effecting the clamping of the column through the clamp ing means.

18. In a drilling machine, the combination of a base, a column rotatably supported on the base, an arm carried by the column, a drill supporting element on the arm, power means for operating the drill, clamping means for engaging the column adjacent the base, means comprising an electro-magnetic clutch for operatively connecting the clamping means with the power means for effecting the clamping of the column through the clamping means, and a switch on the drill supporting element for controlling the electro-magnetic clutch.

1%. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mecnanism carried by the column, power means for operating the drilling mechanism, clamping means for engaging the column adjacent the base, a pair oi: element-s rotatable in opposite directions by the power means, and means comprising an electromagnetic clutch adjacent each element for operatively connecting the clamp ing means with either of such elements for effecting the clamping and unclamping respectively of the column through the clamping means.

15. In a drilling machine, the combination of a base, a column rotatably supported on the base, an arm carried by the column, a drill supporting element on the arm, power means for operating the drill, clamping means for :eng ging the column adjacent the base, a pair of elements rotatable in opposite directions by the power means, means comprising an electro-ntiagnetic clutch adjacent each element for operatively connecting the clamping means with either of such elements for effecting the clamping and un clamping respectively of the column through the clan'iping means, and a switch on the drill SUPPOI'tlDg element for closing the circuit of either electro-magnetic clutch.

16. In a drilling machine, the combination of a b: e, a column rotatably supported on the base, drilling mechanism carried :by the column, power means for operating the drilling n'iechanism, clan'iping means for engaging the column adjacent the base, a shaft operatively connected with the clam-ping means, a pair of gears loose on the shaft, an operative connection from the power means to the gears to drive the same in opposite directions, an electro-magnetic clutch means secured to the shaft adjacent each gear, and a switch for closing the circuit of either clutch means for operatively connecting the shaft with either gear for effecting the clamping or unclamping respectively of the column through the clutch means.

17. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means surrounding the column adjacent the base, a shaft provided with an eccentric thereon operativcly connected with the clamping means for drawing the same into tight engagement with the column, means comprising an electromagnetic clutch for operatively connecting the shaft with the power means for effecting the clamping of the column through the clamping means, and means for stopping the rotation of the shaft and eccentric in the column clamping po- Sition.

18. In a drilling machine, the combination of a base, a column rotatably supported on the base, drilling mechanism carried by the column, power means for operating the drilling mechanism, clamping means surrounding the column adjacent the base, a shaft operatively connected with the clamping means for drawing the same into tight engagement with the column, a pair of elements rotatable in opposite directions by the power means, means comprising an electro-magnetic clutch adjacent each element for operatively connecting the shaft with either of such element for effecting the clamping or unclan'iping respectively of the column through the clamping means, and means for stopping the rotation of the shaft in the column clamping and unclamping positions as the shaft rotates in opposite directions respectively.

19. In a radial drilling machine, the com bination of a radial drill arm adjustable to different radial positions, a drill spindle thereon, means for rotating said drill spindle including a rotatable element, a clamp to secure said radial drill arm in radial positions, and means for operating said clamp comprising an operated member having operative connection with said rotatable element.

20. In a radial drilling machine, the combination of an upright post, an upright column rotatable about said post, a radial drill arm, power means for adjusting said drill arm to elevation on said column, a drill. spindle on said drill arm, power means for rotating said drill spindle, clamping means for clamping said column with relation to aid post, and operating means for said clamping means having power connection with said last-named power means.

21. In a radial drilling machine, the combination of a radial drill arm adjustable to different radial positions, a drill spindle on said drill arm, a clamp for clamping said drill arm in radial positions, driving means for rotating said drill spindle, operating means for said clamp including oppositely rotating gears having operative connection with said driving means, and means for selectively operatively connecting said oppositely rotating gears with said clamp.

22. In a radial drilling machine, the combination with an upright post, a rotatable column about said post, a clamp for clamping said column with relation to said post, a drill arm on said column, and operating means for said clamp comprising reversely rotating gears, a shaft rotatable in opposite directions by said gears and having operative connection with said clamp, and means for operatively connecting said respective gears with a power driven element of said drilling machine.

In testimony whereof I hereto aiiix my slgnature.

WILLARD T. SEARS 

